*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan00001010
Feb001034
Mar017008
Apr019037800568
May6101684680010642
Jun11197222910020024
Jul3470522060009146
Aug1261154001172
Sep041959001963
Oct2360200607
Nov01150016
Dec001003646
Total6537147694504944206